Metal car-door.



W. P. MURPHY.

METAL CAR DOOR.

APPLICATION FILED FEB. 13' I914.

Patented Dec. 7, 1915.

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a MFA a airmen WALTER T. MUBIHY, OF CHICAGO, ILLINOIS.

METAL Chit-EDGE.

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Specification of Letters Patent.

Patented Dec. '2, ra n.

Application filed February 13, 1914. Serial No. 818,486.

To all whom it may concern:

Be it known that I, ammi P. MURPHY, a citizen of the United States, residing at Chicago, in the county of Cook and State of lllinois, have invented certain new and useful Improvements in Metal Car-Doors, of which the following is a specification.

The object or my invention is to provide an all metal door, adapted for wooden and all metal cars, of a simple, durable and economical construction and which may be readily and economically repaired; and with these and minor objects in view my invention consists of the parts and combination of parts as will be hereinafter fully set forth.

In the drznvings :'l*igure 1 is a front elevation of an all metal car door embodying my invention; Fig. 2 an end elevation of the same; Fig. 3 is a vertical. sectional View of my door on the line A-B, Fig. 1, showing the door in position on a car; Fig. l is an enlarged detail sectional view on the line Q;D, Fig. 1; Fig. 5 is an enlarged detail sectional view showing a modified form of joint between the plates.

My improved our .door is composed of a plurality of sections or plates 6, 7, 8 and 9 each being substantially triangular in outline. Two side marginal edges of each plateare rebent at right angles to the plane of the plate to form a flange 10 which gradually increases in height from. the outer edge toward the center of the plate. as more clearly shown in lfigs. 2 and When the flanges 10 of abutting plates are brought together and riveted. by means of the rivets 11, with a weatherproof joint, they constitute, in effect, a truss, or coi'npression member which very materially strengthens the door to withstand thrusts due to shifting freight, and prevents it from becoming twisted by rough handling. A four way cap l2 is placed over these flanges 10 at the point of intersection to close the joint between them at such point: said cap being secured to the flanges by means of the rivets 13.

The outer edgeoi each plate is formed with an under open rebend ll which stillens d outer edge as will be understood by skilled in the art of metal working. C. open :rebend 14 on the upper and lower es (6 and 8) ol the door constitute hous into which the guards 15, on the car,

project whereby the door is prevented from swinging away from the side of the car. 16 are roller castings secured to the bottom plate of the door, the rollers of which run on the track 17, which track is shown integral with the guard 15.

18 are corner caps which fit snugly over the corners of the door and over the ends of the upstanding flanges 10; said caps being riveted to said flanges as shown.

Vertical, horizontal and diagonally disposed corrugations are pressed in each plate to reinforce it, each plate, intersecting each other.

It will be noted that plates 6 and 8 are duplicates of each other, and that plates 7 and 9 are duplicates of each other whereby repairs are facilitated.

From the above it will be seen that I have provided a durable, rigid, compact and economical door and that my improved door is sufficiently subdivided, so that in case of ac cident, whereby the door is bent or twisted, there will be no diiliculty in finding a fur nace big enough toefl ect the needed repairs, which would not be the case when the door is constructed from a single piece of metal. Besides which, in the original manufacture of the door, the subdivided plates are much more easily handled at the press than would be the case with a single sheet the size of the door.

In Fig. 5 l have shown a modified form of joint between the plates wherein the side marginal flange of one side is rebent from the said marginal flange of the adjacent plate, said rebend forming, in edect, a cap for the joint. i

hat I claim is A metal door composed of a. plu iity or sections having upturned margins edges riveted ti. 1 to receive the co. upturned edges where the joints cross each other, and caps fittir ners of the door and the outer o upturned marginal abutting edges of the said sections.

In testimony whereof-I atlix in presence of twowitnesses.

WALTER P. MURPHY;

my signature Witnesses:

, PETER F. llvlOSHANE,

JOSEZHINE HARTNETT.

the diagonal corrugations, on 

